The Composite Video / Stereo Hi-Fi Audio Balun (MB-CVHFB) allows one composite video one stereo audio to be transmitted via a single Cat5e / 6 cable in a point-to-point connection. The Composite video / stereo Hi-Fi Audio Balun features full audio bandwidth response for high fidelity applications. The Composite video / stereo Hi-Fi Audio Balun works in pairs some of the applications are classroom video distribution commercial and home audio / video systems hospital video training video conferencing and video kiosks; Support video format: NTSC PAL SECAM; Audio bandwidth: 0~6MHz (Composite video) 20Hz~20KHz(audio); Input signal peak: 1.1Vp-p 1.1Vp-p(audio); Input / output impedance: 75ohms min 600 ohms (signal source); Insertion loss: 40dB >40dB (audio); Transmission distance: 350m (Composite video) 1000m (audio); Pin Configuration: video: Pins 4(R) &5(T) audio: Pins 1(R) & 2(T) Pins 7(R) & 8(T); Standard twisted-pair features: Characteristic impedance: 100ohms; Distributed capacitance: 20 pf/ft; Attenuation: 6.6 dB/305m @1 MHz; Interface: 3 x RCA female (yellow white red) 1 x RJ45; Working temperature: 0~55'C; Storage temperature: -20~85'C; Humidity: 0~95%